ProgressBarSwitcher

package at.sapps.utils;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.ViewSwitcher;

public class ProgressBarSwitcher extends ViewSwitcher {

    private ProgressBar mProgressBar;

    public ProgressBarSwitcher(Context context) {
        super(context);
    }

    public ProgressBarSwitcher(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public ProgressBar getProgressBar() {
        return mProgressBar;
    }

    /**
     * Recursively calling showNext() to at some point show the progressbar
     */
    public void showProgressBar() {
        if (mProgressBar == null || getCurrentView() == mProgressBar) {
            return;
        }

        showNext();
        showProgressBar();// recursive call to show progressbar at some point
    }

    /**
     * Goes to the next view if the progress bar is the current View
     */
    public void hideProgressBar() {
        if (getCurrentView() == mProgressBar) {
            showNext();
        }
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        lookForProgressBar();
    }

    private void lookForProgressBar() {
        for (int i = 0; i < getChildCount(); i++) {
            View child = getChildAt(i);
            if (child instanceof ProgressBar) {
                mProgressBar = (ProgressBar) child;
                return;
            }
        }

        throw new IllegalStateException(
                "A ProgressBarSwitcher needs to contain a ProgressBar!");
    }

}